#!/bin/sh /etc/rc.common
#
# Copyright (c) 2014-2015 The Linux Foundation. All rights reserved.
# Permission to use, copy, modify, and/or distribute this software for
# any purpose with or without fee is hereby granted, provided that the
# above copyright notice and this permission notice appear in all copies.
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

#SFE connection manager has a lower priority, it should be started after other connection manager
#to detect the existence of connection manager with higher priority
START=70

have_cm() {
	[ -d "/sys/kernel/debug/ecm" ] && echo 1 && return

	echo 0
}

#load shortcut-fe and connection manager
load_sfe() {
	local kernel_version=$(uname -r)

	[ -d "/sys/module/shortcut_fe" ] || insmod /lib/modules/$kernel_version/shortcut-fe.ko
	[ -d "/sys/module/shortcut_fe_ipv6" ] || insmod /lib/modules/$kernel_version/shortcut-fe-ipv6.ko

	[ -e "/lib/modules/$kernel_version/shortcut-fe-cm.ko" ] && {
		[ -d /sys/module/shortcut_fe_cm ] || insmod /lib/modules/$kernel_version/shortcut-fe-cm.ko
	}
	[ -e "/lib/modules/$kernel_version/fast-classifier.ko" ] && {
		[ -d /sys/module/fast_classifier ] || insmod /lib/modules/$kernel_version/fast-classifier.ko
	}
}

start() {
	[ "$(have_cm)" = "0" ] && load_sfe
}

stop() {
	[ -d "/sys/module/shortcut_fe_cm" ] && rmmod shortcut_fe_cm
	[ -d "/sys/module/shortcut_fe_ipv6" ] && rmmod shortcut_fe_ipv6
	[ -d "/sys/module/shortcut_fe" ] && rmmod shortcut_fe
	[ -d "/sys/module/shortcut_fe_drv" ] && rmmod shortcut_fe_drv
	[ -d "/sys/module/fast_classifier" ] && rmmod fast_classifier
}
